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Axial suspension plasma spraying of Al2O3 coatings for superior tribological properties
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för avverkande och additativa tillverkningsprocesser (AAT). (PTW)ORCID-id: 0000-0001-5676-7903
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för avverkande och additativa tillverkningsprocesser (AAT). (PTW)
Treibacher Ind AG, Althofen, Austria.
Uppsala Univ, Dept Technol, Mat Sci Div, S-75121 Uppsala, Swede.
Vise andre og tillknytning
2017 (engelsk)Inngår i: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347, Vol. 315, s. 80-87Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Suspension plasma spray is a relatively new thermal spray technique which enables feeding of fine powder to produce advanced coatings for varied applications. This work investigates the difference in structure and performance of Al2O3 coatings manufactured using conventional micron-sized powder feedstock and a suspension of sub-micron to few micron sized powder. Axial injection was implemented for deposition in both cases. The effect of feedstock size and processing on the tribological performance of the two coatings was of specific interest. The coatings were characterized by Optical and Scanning Electron Microscopy, micro-hardness and scratch resistance testing, and their dry sliding wear performance evaluated. The suspension sprayed coatings yielded significantly higher scratch resistance, lower friction coefficient and reduced wear rate compared to conventional coatings. The improved tribological behaviour of the former is attributable to finer porosity, smaller splat sizes, and improved interlamellar bonding. (C) 2017 Elsevier B.V. All rights reserved.

sted, utgiver, år, opplag, sider
2017. Vol. 315, s. 80-87
Emneord [en]
Atmospheric plasma spray; Suspension plasma spray; Axial injection; Alumina; Coating; Microstructure; Micro-hardness; Scratch; Wear
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-10931DOI: 10.1016/j.surfcoat.2017.02.025ISI: 000399268100009Scopus ID: 2-s2.0-85013027004OAI: oai:DiVA.org:hv-10931DiVA, id: diva2:1142710
Tilgjengelig fra: 2017-09-20 Laget: 2017-09-20 Sist oppdatert: 2019-05-23bibliografisk kontrollert

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Goel, SnehaBjörklund, StefanJoshi, Shrikant V.

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